866995968 has 36 divisors (see below), whose sum is σ = 2307475688. Its totient is φ = 288998400.

The previous prime is 866995949. The next prime is 866995979. The reversal of 866995968 is 869599668.

It is a junction number, because it is equal to n+sod(n) for n = 866995899 and 866995908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 563683 + ... + 565218.

Almost surely, 2^866995968 is an apocalyptic number.

It is an amenable number.

866995968 is an abundant number, since it is smaller than the sum of its proper divisors (1440479720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

866995968 is a wasteful number, since it uses less digits than its factorization.

866995968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128920 (or 1128906 counting only the distinct ones).

The product of its digits is 50388480, while the sum is 66.

The square root of 866995968 is about 29444.7952616417. The cubic root of 866995968 is about 953.5402414394.

The spelling of 866995968 in words is "eight hundred sixty-six million, nine hundred ninety-five thousand, nine hundred sixty-eight".